138 lines
4.6 KiB
Elixir
138 lines
4.6 KiB
Elixir
defmodule Pleroma.Web.ActivityPub.ActivityPub do
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alias Pleroma.{Activity, Repo, Object, Upload, User, Web}
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alias Ecto.{Changeset, UUID}
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import Ecto.Query
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import Pleroma.Web.ActivityPub.Utils
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require Logger
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def insert(map, local \\ true) when is_map(map) do
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with nil <- Activity.get_by_ap_id(map["id"]),
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map <- lazy_put_activity_defaults(map),
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:ok <- insert_full_object(map) do
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Repo.insert(%Activity{data: map, local: local})
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else
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%Activity{} = activity -> {:ok, activity}
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error -> {:error, error}
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end
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end
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def create(to, actor, context, object, additional \\ %{}, published \\ nil, local \\ true) do
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with create_data <- make_create_data(%{to: to, actor: actor, published: published, context: context, object: object}, additional),
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{:ok, activity} <- insert(create_data, local),
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:ok <- maybe_federate(activity) do
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{:ok, activity}
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end
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end
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# TODO: This is weird, maybe we shouldn't check here if we can make the activity.
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def like(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object, activity_id \\ nil, local \\ true) do
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with nil <- get_existing_like(ap_id, object),
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like_data <- make_like_data(user, object, activity_id),
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{:ok, activity} <- insert(like_data, local),
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{:ok, object} <- add_like_to_object(activity, object),
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:ok <- maybe_federate(activity) do
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{:ok, activity, object}
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else
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%Activity{} = activity -> {:ok, activity, object}
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error -> {:error, error}
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end
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end
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def unlike(%User{} = actor, %Object{} = object) do
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with %Activity{} = activity <- get_existing_like(actor.ap_id, object),
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{:ok, _activity} <- Repo.delete(activity),
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{:ok, object} <- remove_like_from_object(activity, object) do
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{:ok, object}
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else _e -> {:ok, object}
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end
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end
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def announce(%User{ap_id: ap_id} = user, %Object{data: %{"id" => id}} = object, activity_id \\ nil, local \\ true) do
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with announce_data <- make_announce_data(user, object, activity_id),
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{:ok, activity} <- insert(announce_data, local),
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{:ok, object} <- add_announce_to_object(activity, object),
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:ok <- maybe_federate(activity) do
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{:ok, activity, object}
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else
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error -> {:error, error}
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end
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end
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def follow(follower, followed, activity_id \\ nil, local \\ true) do
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with data <- make_follow_data(follower, followed, activity_id),
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{:ok, activity} <- insert(data, local),
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:ok <- maybe_federate(activity) do
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{:ok, activity}
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end
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end
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def unfollow(follower, followed, local \\ true) do
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with %Activity{} = follow_activity <- fetch_latest_follow(follower, followed),
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unfollow_data <- make_unfollow_data(follower, followed, follow_activity),
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{:ok, activity} <- insert(unfollow_data, local),
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:ok, maybe_federate(activity) do
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{:ok, activity}
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end
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end
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def fetch_activities_for_context(context) do
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query = from activity in Activity,
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where: fragment("? @> ?", activity.data, ^%{ type: "Create", context: context }),
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order_by: [desc: :inserted_at]
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Repo.all(query)
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end
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def fetch_public_activities(opts \\ %{}) do
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public = ["https://www.w3.org/ns/activitystreams#Public"]
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fetch_activities(public, opts)
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end
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defp restrict_since(query, %{"since_id" => since_id}) do
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from activity in query, where: activity.id > ^since_id
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end
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defp restrict_since(query, _), do: query
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defp restrict_recipients(query, recipients) do
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Enum.reduce(recipients, query, fn (recipient, q) ->
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map = %{ to: [recipient] }
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from activity in q,
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or_where: fragment(~s(? @> ?), activity.data, ^map)
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end)
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end
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defp restrict_local(query, %{"local_only" => true}) do
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from activity in query, where: activity.local == true
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end
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defp restrict_local(query, _), do: query
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defp restrict_max(query, %{"max_id" => max_id}) do
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from activity in query, where: activity.id < ^max_id
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end
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defp restrict_max(query, _), do: query
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defp restrict_actor(query, %{"actor_id" => actor_id}) do
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from activity in query,
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where: fragment("?->>'actor' = ?", activity.data, ^actor_id)
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end
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defp restrict_actor(query, _), do: query
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def fetch_activities(recipients, opts \\ %{}) do
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base_query = from activity in Activity,
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limit: 20,
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order_by: [desc: :id]
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base_query
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|> restrict_recipients(recipients)
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|> restrict_since(opts)
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|> restrict_local(opts)
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|> restrict_max(opts)
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|> restrict_actor(opts)
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|> Repo.all
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|> Enum.reverse
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end
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def upload(file) do
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data = Upload.store(file)
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Repo.insert(%Object{data: data})
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end
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end
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